Stamping mechanism



E. NORDSTROM. STAMPING MECHANISM. APPLICATION FILED NOV. Il, 19l9.

@faiblesses m am E. NORDSTROM.

STAMPING MECHANISM. APPLICATION FILED Nov.1|.1919.

1 A26, @00, Patented Aug. 1.5, 1922 2 SHEETS-SHEET 2.

g TNvENToR BY QJ ATTo UNITED STATES 5955151.11. lolif-,PlcEgg.

EILoF NORDSTROM; oFNEwARx, NEW JEnsY, AssIGNoR, BY MEsNE -AssreNii/LNTS,

To AMERICAN DAN BofrTLEsEA-L coRronArr'cm,AcoRI'oRATIo1\IoriDELAWARE,y

To` ell w kom tf/nay concern Be it known that LELOF Nonns'r'noM, a

vcitizen of the United States, and residingy at Newark, county of Essex, and f State 'of New Jersey7 have invented certain new and useful Improvements inStamping Mechan`ism,"o:tl which the following is 'a Jfull and clear specication'..

v. This Vinvention relates to stamping mechanism and Vmore especially tothat'type 'ofv stamping mechanism in which blank stamping andshaping dies are arranged in, suitable relation to each other to have theblank Iwhich is cut in one die, stamped. directly` into the other die. 'The object of this' invention is to provide limproved[stamping ymechanism of this character whereby the space between the blank cutting plunger 'and .the shaping die is positively controlled so that sufiicient allowance is'made for permit,- ting the metal to1 be. drawn into the shaping .die during 'the eperation of the shaping y stamp and diem ne of the objects of the Epresent vinvention is toprovide suitable spacing' means for the stamping mechanismi' shown and described in .Patent No.y 1,212,665

whi'chwas granted in ymyname on January 16th, 1917 '.1 'In .the drawings which show the preferred embodiment `of my invention,

i i in Section; 3 5

' Figure 1 isa'side'elevation; of the ystampingl 4mechanismv4 constructed in accordance withthe principles of the present' invention, parts beingl broken away and parts shown Fi'gure 2f isa top plan view ofthe same, partis'being shown insection; i

Figure 3 is a section onthe li"ne.3-3,`

v Figure 1, yparts being 4shown in elevation.

Fig., 4 isaview in direction of arrow of the'section4f-4 in Fig. 1. f y, n y "According to the embodiment ofumy inventionshown on the, drawings, ya suitable base or supportiwhich, maybev aheavy member of the main Vframe4 of -a machine to; which the, invention ,may beapplied',

serves, to mount an upright` or bracket `2 whichlisproyided with; an oiiset portion 3 intheform of `a column or ltubular support,

This lfcoluinn is provided above with yan en- 50v largement'eor'thickened portion 4 which is surmounted byv a ca Hplatee which constitutes a blankfcilttlng fdie.l Reciprocably mounted in the' column 3 'isy a hollow blank @netting plungerfgwhichzis rprovided at` its e seccification of Lettejs ratezle f lower 'end fwithvathr'eaded portion 7 on which' is Yadj'ustably 'mounted a spool 8, said spool being provided with a v[peripheral groove 9 for receiving the inwardly prei 'sented'pins' l10' which 'are'mounted in" the bifurcated end .of a" leverv arm '11,"the`h'ub 12'of's`aid 'lever'arm being pivotally motilit-y ed on ya pin 13v which is vcarried by the which is reciprocably mounted the lower end of. apconnecting rod 17.` 'Thelower end of said rod 17 has keyedtheretoa collar'18 which, limits the lupward displacer'nent` of' A rod '17 with respect to the yoke 16. `Interposed between the yoke 16 and an adjustable, abutment 19 on the upper end of therod 17 is a compression spring 2O ywhich :normally'tends to displa'cethe rod` 17fupwardly, The 'upper .end of thev rod 17 is'jpivotally y Patented Augnu15, 1922;?rl 'Applicauufnled November 1'1,- i9,1e.siia1oNo; 337,202,317"

connected at 21 with' one arm of a bentfleverl 22 Awhich is.y pivoted at 23, the otherv arrn`23I of said lever being 'providedjwithfa'cam roller24`which operatesv in a'cam 'groove 25.1' "I A's shown inQFigure 3, afspacef26 "is yprovided aroundthe'upperend of blank 'cutgting plunger 6,"a'pair of stock feeding ele-l ments 27 being provided for Amoving vvthe blank forming'material across theunder|`` surface koi" theblank cutting die fat times when the plungerfbis inlowered position. 4

Beciprocably mounted within the blank "cnt ting plunger 6 is aforming plunger 28,wh`ich cooperatesv at its'upper end with' adie29v provided in a suitable plate or table 30. threaded lower end ofplurigerv 28 carries a spoolI 31 provided with a peripheral groove 32 which receives they inwardly presented:

pins 33 carried by the'bifurcated end of'a lever arm ySaid lever arm34'wi`s 'carried' by a hub' 35 'which also carries anfoiset'r levery armf36. The lever A34,r 35, 36 is fulcrummed on apin 37; Apin 38 serves to pivotally connect the' lever ann-36 with the lowered endf39jof-a connecting rod, the Vupper end of said connecting r'od beingppivotally connected to a levernarm 40- of a bell crank lever which is fulcrummed on a cam slot 44. The cam slots 25 and 44 are lformedy in the periphery lof a cam,L 45fwl1ich4 iszkeyed to, a' cam shaft rA check nut;

`4:1 and provided with @Cam arm 42 which carries' 'a cam roller 43 cooperatingv with v11'105 l' ,y

so as to permit the metal in the blank to draw freely as the forming plunger 28 forces it upwardly into the die 29, are provided as follows.. y f 1 f Reciprocablymounted in the enlargement 4 of the collar 3, is a Vspacing rod or strut 49 which has itslowe'rend carriedby the lockv nut 48. means of this construction, a j

positive abutment is secured for exactly predetermining the space relationship between theblank cutting plunger and metal drawing die for dili'erent thicknesses of metal. `By means of the spring 20 on the connecting rod 1 7, thefblank cutting operation is relieved from undesirable stresses resulting from having the rod 49er positive length inter-M posed between the plate or table 30 and the lock nut 48.

Briefly described, the operation of my imfv proved stamping mechanism is as follows: As the cam block 45 rotates from the position shown in Fig. 1, plungers 6 and 28 are 4returned downwardly from theirl position shown in Fig. `3. Immediately the stock or tapek out of which the caps are constructed is fed from the right according. to Fig. 1 through a passageway which extends under the cap plate 5 which is provided with the blank 'cutting die. This movement is producedby the reciprocating elementsl 2T which alternately engage and release the stock as shown and described in Patent No. 1,212,665@ Nordstrom dated January 16th, 1917.k `After a forward movement. of the tape, the blank cutting plunger 6 is moved upwardly by the cam roller 24 moving toward the letin" cam groove 25. Near the endl of the blank cutting movement the metal drawing plunger 28 begins an upward movement a-sithe cam roller 43 is moved toward t'heleit by` camy groove 44. The upward movement ofthe blank cuttingfplunger is positively limited in its approach tov the die plate 30 by means of the spacing rod49 which constitutes aV rigid abutment interposedbetween the die plate 30 and the lock nut 48 on plunger 6. rigidfblock or projection()I disposed' in the line of thrust the rod 49 to support they-die plate 3() Iat the times it is subjectjto the thrust of rod 49A l under the present-epi spring 2O on connect- 1. 'na `machine rot the' character described, the combination with blank punching mechI anism and blank shaping mechanism, said mechanisms including spaced die plates and plungei-s cooperating respectively with saidl die plates, of Vmeans constituting an' abutmentfor limiting the approach of the blank cutting plunger with respect to the blankl shaping die plate. v j j 2. ln` a machine orp the character described, a blankshaping die,ar Iblankshaping plun-l ger, a blanlr-c'utting die, a blank-cutting plunger cooperatingv with said blank-cutting die for cutting ablank to be shaped in said blank=shaping dieandcooperating with said blank-shaping diey for providing a .drawing gaplfor the blank during the shaping op\ eration, means yieldably driving said blankl cutting plungertol its`,worl and rigid means interposed between said blank-.shaping `die andl aplartwwhich partakes of the movement of said blankrutting.plungery for positively deiining the size of said blank-drawing gap. In a machine ot the character described, a blank cutting die plate, a forming-die plate coaxially spacedtherefrom, azhollow blank.,y cutting plungerbetweenwhich `and vthe cut-l ting die plate there is relativ'efmovement, aI plunger within said blank cutting 4 plunger cooperating with said `Jforming die plate, and a strut interposed between `said forming die plate and a partcarried by `said blank cuty tingl plunger, said strut determining the least space between` `said blank'` cutting `plii1`i ger and said forming] die,

4v. ln a machine ofthechyaracter described, coaxial blank cutting and formingfdiesfconf, centri'cally mounted plungers v,cooperatiing respectively with said dies,fand a spacing rod mounted on vthe blankcuttingv plunger' and adapted to abut against'th'e iormingfdie tor positively limiting the .drawing space for the blank during 'the oi'niin2`g"operation,A l

*5i In a machine of the character described', coaXially arranged blankcutting aindgmetlal drawingv dies and p-lungers, llevers for revciprocating said plungers, an adjustable con#` nection between thebl'ank cutting yplunger and the levertouwhichit l.is connected, 'said connection including alock nut, and a sfpacfvk ingi-od carried lock nut and adapted to abut against't'he metal drawing die'for limiting the approach joflsaid blank cuttingplunger tlieieto.' p j j p j 6,. l" amac'hne ofthe'fcharacter described coaially arran'gedv blank cutting? and metal drawing dies and p'luiigeis, levers Afor reciprocating saidy plungers, an adj ustabl connection between the blank cutting plunger the lever 'to which it is connected, saidcoiinection infcluding-y aflo'ck nut, aufspacing rod carried by said lock nut adapted to abut :against the metal drawing die to-r' ylimiting"the", approach of said blank 'cutting plifin'geij' 'theretd and yieldable means vvfor ,oscillg'itingthe last mentionefdlever. l 7. in a'machineofthecnaraeter described,

coaxially arranged blank cutting and metal drawing diesand plungers, levers for reciprocatng said plungers, an adjustable connection between the blank cutting plunger and the lever` to which it is connected, said connection including a lock nut, a spacing rod carried by said lock nut and adapted to abut againstthe metal drawing die 'foi' limiting the approach 'of said blank cutting plunger thereto and means for I`reenforcng the ing rod.

ELoF NoimeTRolvLv i r .10 drawing die to resist thethru'st of said spac- 

